Wrench.



H. H. GARDNER.

WRENCH.

APPLICATION men FEB. a. 1911.

1,257,077. I Patented Feb. 19, 1918.

anowkoi Hmzm H-GHRDNEK arm -u;

UETE s HARRY I-I. GARDNER, or JoHNs'rown, PEnnsYnvAnIA;

wema.

A tnbaiibn filed February 8, isi'v. Serial No. 147,453.

To all whom it my camera.-

Be it known that I, HARRY H GARDNER, a citizen of the United States,residing at Johnstown, in the county of Cambri'a and State ofPennsylvania, have invented certain new and useful Irnprovernents' inWrenches, of which the following is a specification, reference being hadto the accompanying drawings. p I

i his invention coinprehends certain new and useful improvements intoolsand relates particularly to awrench of the sliding jaw quickadjustment type. o

The invention has for its primary object a simple, durable, andefficient construction of device of this character in which the movablejaw which is mounted to slide along the toothed shank, is provided witha pivotally mounted locking bar having teeth designed to interlock withthe teeth of the shank whereby the two jaws may be held in rigidrelation to each other upon the work, a yoke encircling the shank andformed with laterally spaced lugs between which the handle portions ofthe locking bar is adapt ed to fit, whereby all strains will. berelieved from the pivot thereof. 7

And the invention also aims to generally improve devices of this classso as to render them more useful and commercially desirable.

With these and other objects in view, as will more fully appear as thedescription proceeds, the invention consists in certain constructions,arrangements and combinations of the parts that I shall hereinafterfully describe and claim.

For a full understanding of the invention,

reference is to be had to the following description and accompanyingdrawing, in which- Figure 1 is a side elevation of a wrench constructedin accordance with my invention, a portion of the movable jaw beingbroken away.

Fig. 2 is a top view of a portion of the wrench.

Fig. 3 is a transverse sectional view on line 3-3 of Fig. 1.

Corresponding and like parts are referred to in the followingdescription and designated in all of the views of the accompanyingdrawing by like reference characters.

Referring to the drawing, the numeral 1 designates the shank of mywrench, and 2 the shank 1 and is formed, as shown, with a recess 6, inwhich the reduced locking bar 8 is received, sa d rediiced 'eiid beingpivotally secured in the recess by a transversely extending rivet orpintle, as

shown. The locking bar 8 is formed intermediate of its ends with teeth 9designed to interlock with the corresponding bevel teeth 10 that areformed on the'shank 1 so that after the movable jaw has been properlyadjusted toward the fixed jaw and the two jaws engaged with the work,the engagement of the teeth 9 and 10 will hold the movable jaw 1 rigidlyin position and the nut or the like may thus be easily turned.

The locking bar 8 is formed with a handle portion 11 which is designed,in the operative position of said bar, to extend along the flattenedside 3 of the main handle 2, as clearly illustrated in the drawing.

Preferably, a brace bar 12 is welded or otherwise rigidly secured at oneend to the heel end of the fixed jaw 4:, and extends parallel with theshank and in spaced rela tion thereto, the other end of said brace barbeing welded or otherwise secured to an extended portion of a yoke 13which encircles the shank at one end of the handle 2 and thus forms anabutment piece for the adjacent end of said handle. The bar 12 serves asan additional support for the fixed jaw 4: and also prevents strainingof said jaw when the device is employed in connection with unusuallyheavy work as the strain on the jaw 4 will be carried to the handle 2.The yoke 13 is formed with laterally spaced retaining lugs 14 betweenwhich the handle portion of the'locking bar 8 is adapted to fit when thebar is in its operative position, whereby all lateral stresses orstrains on the bar and its pintle or pivot, are compensated for,

15 designates a leaf spring which is preferably secured by a screw orsimilar fastening device 16 to the movable jaw 5 and which has its freeend extending along the locking bar 8 so as to exert tension thereon ina direction to move the bar into operative engagement with the toothedshank '1 so 7 as to securely hold the parts as againstacor thumbcidental' displacement. Not only .does the bar '12 serve as a" bracebetween theqjaw 4; and the yoke 13, but it serves as a finger may bequickly adjusted by one hand of the operator while the thumb, forexample, of the operator, remains in proper gripping relation on the bar12 and the movement of the fixed jaw will not require the ,operators athumb to be removed while said jaw is being adjusted.

Q -WhatIclaim, is:

' ,While the accompanying, drawing illus trates what I believe tobe thepreferred em 'bodiment of my invention; it is wise understood that.-theinvention is not limited thereto but that various changes may be' madein the construction, arrangements and proportions of the partswithout'departing from the scope of the invention asdefined in theappended claim.

As a new article] of "Copies of this patent may be obtained; for

uard so that the movable jaw d Witnesses 1 manufacture a wrenchcomprising a shank 'provided with a handle at one end and with a fixedjaw at its opposite end, said fixed jaw extending beyondiopposite sides.of the shank, a yoke V embracing the shank and abutting the in l ner endof the handle,' a portion of said yoke extending rea'rwardly from theshank,

brace bar secured to the heel end of the fixed jaw and to the extendedportion 7 of the yoke, said brace bar being; substantially parallel tothe shanktand in spaced relation thereto and free from the movable jaw,

,In testimony whereofl hereuntoaflix. my signature inthe presencegof twowitnesses.

HARRY H. GARDNER;

7 JOHN A. JAMEs, M. R. BRENNAN.

Washington, D. C.

five c'entseaeh, by addressing the Commissioner of iatents.

